I'm sure it is possible but you will be using a day on your pass to enter the park and not experience a full day. If you like Tusker House you will love Boma. It is a restaurant in the Animal Kingdom Lodge. My recommendation would be to cancel the Tusker House meal or reschedule it for your AK day so that you are getting a full day for your ticket. I would then schedule a Boma dinner the evening of your arrival and get to the AKL early to check it out. There is a savanna in the back to see some animals and the lobby of the resort has plenty to kill some time. There is usually a presentation or two every evening on some aspect of African culture or history.
Of course if your heart is set on Tusker House and some time in the AK on arrival day don't let me talk you out of it. I always use arrival day to go to the resorts because I like to maximize my time in the parks. Others don't and that is fine.